Patchouli provides an excellent fixative that can help extend the shelf life of other more expensive oils. It also helps improve skins appearance and can calm nervous tension and worry. This is Therapeutic Grade, 100% pure oil. Blends Well With: Basil (Sweet), Bergamot, Cedarwood, Clove, Copaiba Balsam, Cypress, Geranium, Lavender, Myrrh, Neroli, Orange, Palmarosa, Sandalwood, Vetiver.